Construction of building-walls.



J. MITCHELL. CONSTRUCTION 0F BUILDING WALLS.

APPLICATION FILED SEPT. 2a, 1910.

' 1,039,31 3. Patented Sept. 24, 1912.

' means, namely,

'.1 sar JOHN MI'TCHELL, OF PONSONBY, NEW ZEALAND CONSTRUCTION 0FBUILDING-WALLS.

Locom 3.

Specication of Letters Patent.

Patented Sept. 24, 1912.

Application tiled September 26, 1910. Serial No. 583,9l0.

To all whom it may concern Be it known that 1, JoHN MrrcHnLL, a citizenofthe Dominion of New Zealand, residing at lonsonby, in the ProvincialDistrict of Auckland,Doniinion of New Zealand, have invented certain newand useful Improvements in Constructions of Building- Walls, of whichthe following isa specification.

This invent-ion relates to that type of ieinforced building wallconstruction disclosed in my pending application for patent, SerialNumber 555,540, filed April 4, 1910, and involves a somewhat ditl'ereiitap lication of the reinforcing means as speci cally employed in theabove identified invention.

In the present embodiment of my invention, I aim, as heretofore, toeliminate all necessity for employing false work, framing of p'ood,shattering, etc., in the actual building of the wall, and at thc sametime 1 so peculiarly combine the reinforcing vertical and horizontalrods, with the blocks or slabs, as they are laid in courses, as toderive exceedingly advantageous results from the stand oint of renderingrigid the construction otPa wall, rendering the latter most substantialin resistin vertical and `horizontal stresses and yator ing a unitarywall in which the blocks and rods are intcrlocked firmly to counteractstrain in all directions.

l For a full understanding of the' )resent invention, reference is to behad to tie following description and to the accompanying drawings, inwhich- I Figure 1 is a front elevation'of a building wall constructed inaccordance with the )resent invention; Fig. 2 is a plan view; ltig. 2lis a vertical section of a fragment of a. wall; Fig. 4 is a detailperspective view of one of the building blocks; Fig. 5 is a fragmentaryplan view of a modified embodiment of the invention.

Throughout the following detail description and on the several figuresof thevdrawings, similar parts-are referred to by like reterencecharacters.

In the construction illustratedin Figs. 1 to 4 of the drawings, thebuilding blocks 1 ,and 4 are laid in horizontal superposed courses, theblocks of one course being staggered With respect to' those of anadjacent course as shown most clearly in Fig. 1. The

blocks 1 are formed with end recesses 2 and a central or intermediaterecess 3. upper edge of the block is provided a longitudinal trench 7located intermediate the front and rear edges of the block. The blocks 4are substantially1 of the same form as the blocks 1 excepting that theintermediate vertical recess 3 is omitted in forming said blocks. lVhena course of the wall is laid by assembling the blocks 1, t-lie ad-'jacent ends of said blocks abut, forming lopen recesses Q substantiallyof the saine size as the recess 3 in each of the blocks 1. The abuttingends of the blocks 4 forni recesses 4 similar to the recesses 3 and 2.Furthermore, when a horizontal course of the blocks 1 is laid, thecentral vertical recesses 3 in the faces of said blocks are in line withthe recesses 4 between the ends of the blocks 4. T he aliiied recesses 3and 4 of the respective coursesof blocks are designed to receivevertical reinforcing rods 5, said rods 5 having a firm bearing againstthe central portion of the blocks 1 of the various courses, and asimilar bearing, but not so substantial a one necessarily, against .theend portions of the blocks 4. Laid between the horizontal courses ofblocks above described Aare the horizontal reinforcing rods 6, the samebeing received in the aliiied trenches 7 provided in the upper ed es ofthe blocks 1 and 4. The rods (3 arc a a ted to hold the rods-fi in therecesses in w ii'cli said rods are received, both vertical andhorizontal reinforcing rods beinr thus interlocked with respect to thebloc is against, or on which they are seated.

ln finishing a wall constructed as above described. plaster or otherplastic material may be filled into the recesses 2 and 4', said recessesforming aiiexcelleiit key for )lasteiing the wall. 'llie rigid bearingot the reinforcing means herein set forth against the wall will bereadily apparent as well as the peculiar substantial locking of said'renforcing means with said wall.

Under some conditions, the strength of a wall of the type of thisinvention niayybe materially increased by using crimped horizontalreinforcing rods 6', the. saine being laid in thc horizontal trenches 7upper siirfaees of the blocksl and upon op iosite sides of the verticalreinforcing rods 5. The strengthening action -ot`1 the in the rods 6interlocked with the rods 5 with re- .lo with horizontal trenches, andhorizontal.

crimped rods received. in said trenches and having their crimpedportions in directinterlocking engagement with the Vertical rods.

in presence of J@Wo Witnesses.

JOHN MITCHELL. Witnesses:

HUGH SWEENEY, PHILIP OHAGAN.

In testimonywhereof I affix my signature

